| CTMAB增敏催化动力学光度法测定痕量锰 |
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| 引用本文： | 宋桂兰,任皞,李国宝,杨琳.CTMAB增敏催化动力学光度法测定痕量锰[J].光谱学与光谱分析,2006,26(8):1536-1539. |
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| 作者姓名： | 宋桂兰 任皞 李国宝 杨琳 |
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| 作者单位： | 济南大学化学化工学院,山东,济南,250022 |
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| 摘 要： | 研究了以NTA为活化剂,CTMAB增敏,Mn(Ⅱ)催化KIO4-氧化7-(2-硝基-4-甲基苯偶氮)-8-羟基喹啉-5-磺酸(简称7P8Q5S)的反应,建立了催化光度法测定痕量锰的新方法,以509 nm为测定波长,Mn(Ⅱ)在0～3.2×10-9g·mL-1的范围内成线性关系,检出限为3.8×10-11 g·mL-1,考察了20多种共存离子的影响,用于测定大米、绿豆、小米和土壤中的锰.
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| 关 键 词： | CTMAB 7-(2-硝基苯偶氮)-8-羟基喹啉-5-磺酸、催化光度法 氨三乙酸 高碘酸钾 锰(Ⅱ) |
| 文章编号： | 1000-0593（2006）08-1536-04 |
| 收稿时间： | 2005-04-21 |
| 修稿时间： | 2005-08-06 |
Determination of Trace Manganese by Catalytic Kinetic Spectrophotometry Method with CTMAB as the Sensitizer |
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| SONG Gui-lan,REN Hao,LI Guo-bao,YANG Lin.Determination of Trace Manganese by Catalytic Kinetic Spectrophotometry Method with CTMAB as the Sensitizer[J].Spectroscopy and Spectral Analysis,2006,26(8):1536-1539. |
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| Authors: | SONG Gui-lan REN Hao LI Guo-bao YANG Lin |
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| Institution: | School of Chemistry and Chemical Engineering, Jinan University, Ji'nan 250022, China. |
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| Abstract: | A new catalytic spectrophotometric method for the determination of trace amount of Mn(II) was developed. The method is based on the oxidation of 7-(2-nitryl-4-methyl phenylazo)-8-hydroxy-qinolin-5-slfonic acid by potassium periodate in the presence of nitrilo triacec acid as an activator and CTMAB as a sensitizer. The wavelengths for the determination was 509 nm. The linear range of determination is 0-3. 2 x 10(-9) g x mL(-1) for Mn(II). The determination limit is 3.8 x 10(-11) g x mL(-1). The interference of foreign ions was studied. The method can be used for the determination of Mn(II) in mung bean, rice, cereal and soil samples. |
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| Keywords: | CTMAB 7-(2-nitryl-4-methyl phenylazo)-8-hydroxy-qinolin-5-slfonic acid Catalytic spectrophotometric method Nitrilo triacec acid Potassium periodate Manganese |
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